Question

multiple choice question
reverberation of sound waves involves _.
o the mixing of reflected and original waves
the acceleration of the wave fronts as they move away from the source
the mixing of absorbed and original waves
spacing out of adjacent wave fronts as they get closer to a boundary

Explanation:

Reverberation occurs when sound waves reflect off surfaces. The reflected waves mix with the original sound waves. Absorbed waves do not contribute to reverberation (eliminates "the mixing of absorbed and original waves"). Wave - front acceleration is not related to reverberation (eliminates "the acceleration of the wave fronts as they move away from the source"). Spacing out of wave - fronts near a boundary is not the mechanism of reverberation (eliminates "spacing out of adjacent wave fronts as they get closer to a boundary").

Answer:

the mixing of reflected and original waves